Kσ calculations – Casio fx-9860G SD User Manual
Page 104
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k
k
k
k
k
Σ Calculations
[OPTN]-[CALC]-[
Σ
]
To perform
Σ calculations, first display the function analysis menu, and then input the values
using the syntax below.
K
4(CALC)6(g)3(Σ( )
a
k
,
k
,
α
,
β
,
n
)
○ ○ ○ ○ ○
Example
To calculate the following:
Use
n
=
1
as the distance between partitions.
AK4(CALC)6(g)3(Σ( )a,(K)
x-da,(K)+f,
a,(K),c,g,b)w
A4(MATH)6(g)2(Σ( )a,(K)
x-da,(K)+fe
a,(K)ecfgw
2-5-10
Numerical Calculations
6
Σ
(
k
2
– 3
k
+ 5)
k = 2
# The value of the specified variable changes
during a
Σ calculation. Be sure to keep
separate written records of the specified
variable values you might need later before
you perform the calculation.
# You can use only one variable in the function for
input sequence
a
k
.
# Input integers only for the initial term (
α
) of
sequence
a
k
and last term (
β
) of sequence
a
k
.
# Input of
n
and the closing parentheses can be
omitted. If you omit
n
, the calculator automati-
cally uses
n
= 1.
# In the Math input mode, the distance between
partitions (
n
) is fixed at 1 and cannot be
changed.
β
Σ
(
a
k
, k,
α, β, n)
=
Σ
a
k
=
a
α
+
a
α
+1
+........+
a
β
k =
α
(
n
:
distance between partitions
)
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